Got a new 2014 rMBP (10.10 Yosemite) and did a Apple Migration from a 2007 MBP running 10.6.8 Snow Leopard. But I am unable to open MAIL. I get the message: "Your Mail index has been damaged.* To repair it, quit Mail.* Mail will repair the index the next time you open Mail.* Your mailboxes and messages will be preserved." I quit MAIL, open up again and get the same message. I am nowhere close to an APPLE Store so any suggestions on how to fix this is very much appreciated!